PE film stretching device

Abstract

The utility model discloses a PE (Poly Ethylene) film stretching device, which relates to the field of stretching testing and comprises a workbench, a driving mechanism is arranged in the workbench, a sliding frame connected with a vertical part of the workbench in a sliding manner is connected onto the driving mechanism, one end, far away from the vertical part of the workbench, of the sliding frame is fixedly connected with a fixed frame, and the fixed frame is fixedly connected with the workbench. Clamping mechanisms are installed at the bottom end of the fixing frame and the top of the transverse straight part of the workbench, the two clamping mechanisms synchronously rotate through rotating mechanisms, and the rotating mechanisms are distributed on the transverse straight part of the fixing frame and the workbench; the two clamping mechanisms are used for clamping or releasing the two end parts of the PE film; and the rotating mechanism is used for synchronously driving the two clamps to act. By arranging the rotating mechanism, the upper clamping mechanism and the lower clamping mechanism, the two ends of the PE film can be synchronously clamped and released at the same time, and the operation process is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of stretching test, in particular to a PE film stretching device. Background Art

[0002] PE film needs to be tensile tested during the production process to ensure the quality of the products produced.

[0003] In the prior art, when a PE film is subjected to a tensile test, both ends of the PE film need to be fixed respectively, and after the test, both ends of the PE film also need to be released respectively. This operation process is not convenient enough. Utility Model Content

[0004] The purpose of the utility model is to provide a PE film stretching device in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PE film stretching device, comprising a workbench, a driving mechanism is installed inside the workbench, a sliding frame slidably connected to the vertical part of the workbench is connected to the driving mechanism, an end of the sliding frame away from the vertical part of the workbench is fixedly connected to a fixed frame, a clamping mechanism is installed at the bottom end of the fixed frame and the top of the horizontal part of the workbench, the two clamping mechanisms are synchronously rotated by a rotating mechanism, and the rotating mechanism is distributed on the fixed frame and the horizontal part of the workbench;

[0006] The two clamping mechanisms are used to clamp or release the two ends of the PE film;

[0007] The rotating mechanism is used to synchronously drive the two clamps to perform actions.

[0008] As a further solution of the utility model: the driving mechanism includes a No. 1 forward and reverse motor installed on the top of the vertical part of the workbench, the output end of the No. 1 forward and reverse motor is connected to a screw, the output shaft of the No. 1 forward and reverse motor is rotatably connected to the workbench, the outer wall of the screw is threadedly connected to a slider, one end of the slider is fixedly connected to a sliding frame, and a sliding groove for sliding the slider and the sliding frame is opened on the vertical part of the workbench.

[0009] As a further solution of the utility model: the clamping mechanism includes two connecting columns, and the ends of the two connecting columns that are close to each other are fixedly connected to a connecting head, and a limiting groove is provided at the bottom end of the connecting head. The inner wall of the limiting groove is slidably connected to two limiting blocks, and the ends of the two limiting blocks that are away from each other are connected to a spring, and the other end of the spring is fixedly connected to the end of the inner wall of the limiting groove, and the bottom end of the limiting block is integrally formed with a clamping block, and the two clamping blocks merged together have a truncated cone structure.

[0010] As a further solution of the utility model: the rotating mechanism includes an outer gear threadedly connected to the outer periphery of the connecting head, the inner wall of the outer gear is columnar at the contact position with the connecting head, the inner wall of the outer gear and the contact position with the clamping block are consistent with the outer wall of the clamping block, and the outer periphery of the outer gear is meshed with a driving gear, one of the driving gears is rotatably connected to the fixing frame, and the other driving gear is rotatably connected to the horizontal and vertical part of the workbench;

[0011] A second forward and reverse motor connected to one of the driving gears is installed at the top of the fixing frame.

[0012] As a further solution of the utility model: the two driving gears are connected by a synchronization shaft, a square hole is opened at the center of the top of the driving gear located below, the bottom end of the synchronization shaft is formed into a square block that matches the square hole, and the top of the synchronization shaft is fixedly connected to the bottom of the driving gear located above.

[0013] As a further solution of the utility model: a tension sensor is installed on the top of the fixing frame, and the tension sensor is connected to the connecting column located above.

[0014] As a further solution of the utility model: two guide rods fixedly connected to the workbench are slidably connected to both ends of the sliding frame.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By setting up a rotating mechanism and two upper and lower clamping mechanisms, the two ends of the PE film can be clamped and released simultaneously, making the operation process more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection between the driving mechanism and the sliding frame of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation of the rotating mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the clamping mechanism of the utility model;

[0021] Figure 5 For the utility model Figure 4 A partial enlarged view of point A in the middle.

[0022] In the figure: 1. workbench; 2. No. 1 forward and reverse motor; 3. slide; 4. sliding frame; 5. fixed frame; 6. guide rod; 7. screw; 8. slider; 9. tension sensor; 10. connecting column; 11. outer sleeve gear; 12. No. 2 forward and reverse motor; 13. driving gear; 14. synchronous shaft; 15. connector; 16. clamping block; 17. limit groove; 18. limit block; 19. spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 to Figure 5 In an embodiment of the utility model, a PE film stretching device comprises a workbench 1, a driving mechanism is installed inside the workbench 1, a sliding frame 4 slidably connected to the vertical part of the workbench 1 is connected to the driving mechanism, and one end of the sliding frame 4 away from the vertical part of the workbench 1 is fixedly connected to a fixed frame 5, and a clamping mechanism is installed at the bottom end of the fixed frame 5 and the top of the horizontal part of the workbench 1, and the two clamping mechanisms rotate synchronously through a rotating mechanism, and the rotating mechanisms are distributed on the fixed frame 5 and the horizontal part of the workbench 1; the two clamping mechanisms are used to clamp or release the two ends of the PE film; the rotating mechanism is used to synchronously drive the two clamps to act.

[0025] In this embodiment: first, take out the long strip of test PE film, at this time, the two clamping mechanisms are in the open state, place the two ends of the PE film in the openings of the clamping mechanisms, start the rotating mechanism, the rotating mechanism drives the openings of the two clamping mechanisms to close, and then start the driving mechanism, the driving mechanism drives the sliding frame 4 to move upward, the upward moving sliding frame 4 drives the fixed frame 5 to move upward synchronously, the fixed frame 5 can drive the clamping mechanism located above to move upward, and the clamping mechanism located below remains stationary, at this time the clamped PE film is stretched, and a stretching test is performed.

[0026] Please refer to Figure 1 and Figure 2 The driving mechanism includes a forward and reverse motor 2 installed at the top of the vertical part of the workbench 1, the output end of the forward and reverse motor 2 is connected with a screw 7, the output shaft of the forward and reverse motor 2 is rotatably connected to the workbench 1, the outer wall of the screw 7 is threadedly connected with a slider 8, one end of the slider 8 is fixedly connected with a sliding frame 4, and a sliding groove 3 for the slider 8 and the sliding frame 4 to slide is opened on the vertical part of the workbench 1.

[0027] In this embodiment: start the No. 1 forward and reverse motor 2, the No. 1 forward and reverse motor 2 drives the screw 7 to rotate, at this time the slider 8 moves up and down along the slide groove 3 under the action of its internal thread, the slider 8 drives the sliding frame 4 to move, and the sliding frame 4 is moved up or down by controlling the rotation direction of the No. 1 forward and reverse motor 2.

[0028] Please refer to Figure 3 , Figure 4 and Figure 5 The rotating mechanism includes an outer gear 11 threadedly connected to the outer periphery of the connector 15, the inner wall of the outer gear 11 is columnar at the contact position with the connector 15, the inner wall of the outer gear 11 and the clamping block 16 The contact position coincides with the outer wall of the clamping block 16, and the outer periphery of the outer gear 11 is meshed with a driving gear 13, one driving gear 13 is rotatably connected to the fixed frame 5, and the other driving gear 13 is rotatably connected to the horizontal and vertical parts of the workbench 1; the top of the fixed frame 5 is equipped with a second forward and reverse gear connected to a driving gear 13 The motor 12 and the clamping mechanism include two connecting columns 10, and the ends of the two connecting columns 10 that are close to each other are fixedly connected with a connecting head 15, and the bottom end of the connecting head 15 is provided with a limiting groove 17, and the inner wall of the limiting groove 17 is slidably connected with two limiting blocks 18, and the ends of the two limiting blocks 18 that are away from each other are connected with a spring 19, and the other end of the spring 19 is fixedly connected to the inner wall end of the limiting groove 17, and the bottom end of the limiting block 18 is integrally formed with a clamping block 16, and the two clamping blocks 16 merged together are in a truncated cone structure.

[0029] In this embodiment: when both ends of the PE film are located at the openings of the two clamping mechanisms, by starting the No. 2 forward and reverse motor 12, the No. 2 forward and reverse motor 12 drives the driving gear 13 located above to rotate, and the driving gear 13 at the top drives the driving gear 13 at the bottom to rotate synchronously through the synchronous shaft 14, and the two driving gears 13 synchronously drive the outer sleeve gear 11 to rotate, and at this time, the two outer sleeve gears 11 rotate synchronously and move in opposite directions under the restriction of the thread, that is, the upper outer sleeve gear 11 moves upward, and the lower outer sleeve gear 11 moves downward, and the inner wall cone surface of the moving outer sleeve gear 11 squeezes the outer wall cone surface of the clamping block 16, and the two clamping blocks 16 located in the same clamping mechanism approach each other under the action of the squeezing force, and the clamping block 16 drives the limit block 18 to slide along the limit groove 17, and the spring 19 is stretched at the same time, and the two clamping blocks 16 can cooperate to effectively clamp the end of the PE film;

[0030] On the contrary, after the tensile test is completed, by controlling the No. 2 forward and reverse motor 12 to rotate in the opposite direction, the two outer sleeve gears 11 move toward each other, that is, the upper outer sleeve gear 11 moves downward, and the lower outer sleeve gear 11 moves upward, and the spring 19 is reset, so that the two clamping blocks 16 in a clamping mechanism move away from each other, thereby releasing the clamping of the PE film end.

[0031] Please refer to Figure 2 and Figure 3 The two driving gears 13 are connected by a synchronization shaft 14. A square hole is opened at the center of the top of the lower driving gear 13. The bottom end of the synchronization shaft 14 is formed into a block that matches the square hole, and the top of the synchronization shaft 14 is fixedly connected to the bottom of the upper driving gear 13.

[0032] In this embodiment: after the two clamping mechanisms clamp the two ends of the PE film, when the driving mechanism drives the sliding frame 4 to move upward, the sliding frame 4 drives the fixing frame 5 to move upward, the fixing frame 5 drives the rotating mechanism and the clamping mechanism located above to move upward, the clamping mechanism located above drives the synchronous shaft 14 to move upward, and the synchronous shaft 14 drives the block to separate from the square hole;

[0033] After the upper clamping mechanism is reset to the initial position, the block and the square hole are plugged in again to achieve synchronous unlocking of the two clamping mechanisms.

[0034] Please refer to Figure 2 A tension sensor 9 is installed on the top of the fixing frame 5, and the tension sensor 9 is connected to a connecting column 10 located above.

[0035] In this embodiment: during the stretching of the PE film, the force is transmitted to the connecting column 10 located above through the upper clamping mechanism. The connecting column 10 is connected to the elastomer (elastic element, sensitive beam) in the tension sensor 9. The elastic body under force produces elastic deformation under the action of external force, causing the resistance strain gauge (conversion element) attached to its surface to also deform. After the resistance strain gauge is deformed, its resistance value will change (increase or decrease), and then the corresponding measurement circuit will convert this resistance change into an electrical signal (voltage or current), thereby completing the process of converting the external force into an electrical signal.

[0036] Please refer to Figure 1 and Figure 2 Two ends of the sliding frame 4 are slidably connected with two guide rods 6 fixedly connected to the workbench 1.

[0037] In this embodiment: the guide rod 6 can further improve the stability of the sliding frame 4 during the up and down movement.

[0038] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A PE film stretching device, comprising a workbench (1), wherein a driving mechanism is installed inside the workbench (1), characterized in that: The driving mechanism is connected to a sliding frame (4) which is slidably connected to the vertical part of the workbench (1); one end of the sliding frame (4) which is away from the vertical part of the workbench (1) is fixedly connected to a fixed frame (5); the bottom end of the fixed frame (5) and the top of the horizontal part of the workbench (1) are both equipped with clamping mechanisms; the two clamping mechanisms rotate synchronously through a rotating mechanism; the rotating mechanism is distributed on the fixed frame (5) and the horizontal part of the workbench (1); The two clamping mechanisms are used to clamp or release the two ends of the PE film; The rotating mechanism is used to synchronously drive the two clamps to perform actions.

2. A PE film stretching device according to claim 1, characterized in that: The driving mechanism comprises a forward and reverse motor (2) mounted on the top of the vertical part of the workbench (1); the output end of the forward and reverse motor (2) is connected to a screw (7); the output shaft of the forward and reverse motor (2) is rotatably connected to the workbench (1); the outer wall of the screw (7) is threadedly connected to a slider (8); one end of the slider (8) is fixedly connected to a sliding frame (4); and a sliding groove (3) for the slider (8) and the sliding frame (4) to slide is provided on the vertical part of the workbench (1).

3. A PE film stretching device according to claim 2, characterized in that: The clamping mechanism comprises two connecting columns (10), the ends of the two connecting columns (10) close to each other are fixedly connected to a connecting head (15), the bottom end of the connecting head (15) is provided with a limiting groove (17), the inner wall of the limiting groove (17) is slidably connected to two limiting blocks (18), the ends of the two limiting blocks (18) away from each other are connected to a spring (19), the other end of the spring (19) is fixedly connected to the inner wall end of the limiting groove (17), the bottom end of the limiting block (18) is integrally formed with a clamping block (16), and the two clamping blocks (16) combined together are in a truncated cone structure.

4. A PE film stretching device according to claim 3, characterized in that: The rotating mechanism comprises an outer gear (11) threadedly connected to the outer periphery of the connecting head (15); the inner wall of the outer gear (11) is columnar at the contact position with the connecting head (15); the inner wall of the outer gear (11) is coincident with the outer wall of the clamping block (16) at the contact position; the outer periphery of the outer gear (11) is meshed with a driving gear (13); one of the driving gears (13) is rotatably connected to the fixing frame (5); and the other driving gear (13) is rotatably connected to the horizontal and vertical part of the workbench (1); A second forward and reverse motor (12) connected to a driving gear (13) is installed at the top of the fixing frame (5).

5. A PE film stretching device according to claim 4, characterized in that: The two driving gears (13) are connected via a synchronization shaft (14); a square hole is provided at the center of the top of the lower driving gear (13); the bottom end of the synchronization shaft (14) is formed into a block that matches the square hole; and the top of the synchronization shaft (14) is fixedly connected to the bottom of the upper driving gear (13).

6. A PE film stretching device according to claim 5, characterized in that: A tension sensor (9) is installed on the top of the fixing frame (5), and the tension sensor (9) is connected to the connecting column (10) located above.

7. A PE film stretching device according to claim 1, characterized in that: Two guide rods (6) fixedly connected to the workbench (1) are slidably connected at both ends of the sliding frame (4).

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